I          use a clock to wake me up because at six o'clock each morning the train comes by my house.

A．couldn't

B．mustn't

C．shouldn't

D．needn't

下列数据结构中，能用二分法进行查找的是______。

A．顺序存储的有序线性表

B．线性链表

C．二叉链表

D．有序线性链表